Modelling of pyrolysis of coal-biomass blends using thermogravimetric analysis |
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Authors: | Sadhukhan Anup Kumar Gupta Parthapratim Goyal Tripurari Saha Ranajit Kumar |
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Institution: | Department of Chemical Engineering, National Institute of Technology, Mahatma Gandhi Avenue, Durgapur 713 209, West Bengal, India. |
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Abstract: | The primary objective of this work was to develop an appropriate model to explain the co-pyrolysis behaviour of lignite coal-biomass blends with different proportions using a thermogravimetric analyzer. A new parallel-series kinetic model was proposed to predict the pyrolysis behaviour of biomass over the entire pyrolysis regime, while a kinetic model similar to that of Anthony and Howard Anthony, D.B., Howard, J.B., 1976. Coal devolatilization and hydrogasification. AIChE Journal 22(4), 625-656] was used for pyrolysis of coal. Analysis of mass loss history of blends showed an absence of synergistic effect between coal and biomass. Co-pyrolysis mass-loss profiles of the blends were predicted using the estimated kinetic parameters of coal and biomass. Excellent agreement was found between the predicted and the experimental results. |
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